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Effect of biochar amendment on compost quality, gaseous emissions and pathogen reduction during in-vessel composting of chicken manure

Authors
Chung, Woo JinChang, Soon WoongChaudhary, Dhiraj KumarShin, JoungDuKim, HyunookKarmegam, NatchimuthuGovarthanan, MuthusamyChandrasekaran, MurugesanRavindran, Balasubramani
Issue Date
Nov-2021
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Chicken manure; Green house gas; Rice husk biochar; Mature compost; Pathogen reduction
Citation
CHEMOSPHERE, v.283
Indexed
SCIE
SCOPUS
Journal Title
CHEMOSPHERE
Volume
283
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/190596
DOI
10.1016/j.chemosphere.2021.131129
ISSN
0045-6535
1879-1298
Abstract
Because of rapid development in the livestock industry, the production of chicken manure has subsequently increased, which may contribute to environmental pollution. In this regard, in-vessel composting of biochar amended chicken manure and sawdust mixtures was investigated to find out the effect of biochar at the ratios of 0% (control), 3% (T1), 5% (T2), and 10% (T3) on ammonia and greenhouse gases (GHGs) emission, compost quality, pathogenic contaminants and phytotoxicity. The composting process was performed in 100-L, pilotscale, plastic, cylindrical vessels for 50 days. The addition of biochar (3%, 5%, and 10%) increased the thermophilic temperature with a significant reduction in gaseous emissions (ammonia and CO2), microbial pathogens (Escherichia coli and Salmonella sp.), and phytotoxicity (Lepidium sativum seed germination assay) compared with that of the control compost products. However, according to the obtained results with in-vessel composting, the amendment of 10% biochar showed the most significant effects concerning the quality of the compost nutrients. The study reveals that the addition of biochar during in-vessel chicken manure composting is beneficial in the reduction of gaseous emissions and pathogenic microorganisms apart from improvement in plant nutrients.
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